Support arm for box



FIG. 1 is a perspective view of a first embodiment of a support arm for box showing our new design

FIG. 2 is side elevation view thereof;

FIG. 3 is an end elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is an enlarged detailed view of a portion of FIG. 1;

FIG. 6 is a perspective view of a second embodiment of a support arm for box showing our new design;

FIG. 7 is a side elevation view thereof;

FIG. 8 is an end elevational view thereof;

FIG. 9 is a top plan view thereof;

FIG. 10 is an enlarged detail view of a portion of FIG. 6;

FIG. 11 is a perspective view of a third embodiment of a support arm for box showing our new design;

FIG. 12 is side elevation view thereof;

FIG. 13 is an end elevational view thereof;

FIG. 14 is a top plan view thereof;

FIG. 15 is an enlarged view of a portion of FIG. 11;

FIG. 16 is a perspective view of a fourth embodiment of a support arm for box showing our new design;

FIG. 17 is side elevation view thereof;

FIG. 18 is an end elevational view thereof;

FIG. 19 is a top plan view thereof; and,

FIG. 20 is an enlarged detail view of a portion of FIG. 16.

The broken lines illustrate environmental subject matter that forms no part of the claimed design. 

CLAIM The ornamental design for a support arm for box, as shown and described. 